Alumina-based ceramic composition and substrate obtained by means of this composition
US4480045A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1984 |
| Grant date | Oct 30, 1984 |
| Priority date | — |
| Expiry date | Mar 14, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Ceramic composition containing alumina, a deflocculating agent and at least one organic binder. According to the invention it is constituted, in dry extract form, by 95 to 99% by weight of a mixture of a first alumina of grain size below 2 microns, which can be fritted at a temperature below 1600.degree. C. for a bulk density below 2.3 and a second alumina of grain size below 3 microns, which can be fritted at a temperature below 1650.degree. C. for a bulk density below 2.4 and 1 to 5% by weight of organic products containing at least one deflocculating agent and at least one binder chosen from among the alkyl polyacrylates and their copolymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.